Messages in this thread Patch in this message | | | Date | Sun, 8 Jan 2012 20:27:22 -0200 | From | Rogério Brito <> | Subject | Re: [Bug 41722] Clevo M5X0JE hangs in ACPI init |
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Hi, Edward.
On Jan 06 2012, Edward Donovan wrote: > I'll be interested to know if any IRQ handled by 2.6.38 isn't handled now, > but I expect it will be. I'm sorry if that isn't enough for this laptop, > though -
I bisected the PCI stuff and ended up with a bad commit 12c22d6ef299ccf0955, which was made by Linus:
,----[ git show 12c22d6ef299ccf0955e5756eb57d90d7577ac68 ] | commit 12c22d6ef299ccf0955e5756eb57d90d7577ac68 | Author: Linus Torvalds <torvalds@linux-foundation.org> | Date: Wed Mar 26 11:22:40 2008 -0700 | | Revert "PCI: remove transparent bridge sizing" | (...) `----
The patch that I am using to make this laptop boot at least is essentially a revert of that commit.
Just for the sake of documentation, I am attaching here the patch that makes things work (at least partially).
Any directions to debug this properly are welcome.
Thanks,
-- Rogério Brito : rbrito@{ime.usp.br,gmail.com} : GPG key 4096R/BCFCAAAA http://rb.doesntexist.org : Packages for LaTeX : algorithms.berlios.de DebianQA: http://qa.debian.org/developer.php?login=rbrito%40ime.usp.br diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 86b69f85..84543f5 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -849,6 +849,10 @@ void __ref __pci_bus_size_bridges(struct pci_bus *bus, break; case PCI_CLASS_BRIDGE_PCI: + /* don't size subtractive decoding (transparent) + * PCI-to-PCI bridges */ + if (bus->self->transparent) + break; pci_bridge_check_ranges(bus); if (bus->self->is_hotplug_bridge) { additional_io_size = pci_hotplug_io_size; | |